As promised on its temporary site last week, CircuitCity.com is back up and running.

The brand, which was purchased by Systemax for $6.5 million, has been reincarnated as an online-only source for consumer electronics, computers and accessories. It promises “a wider selection of products than previously offered in Circuit City stores or online.”

On the new site, which apparently launched over Memorial Day weekend, Systemax claims to offer “world-class online content designed to provide you with in-depth knowledge,” including “countless educational articles written by experts in the computer & electronics industry.”

It adds that 90 percent of CircuitCity.com orders are expected to ship from its warehouse the same day.

Systemax seems to be banking on the Circuit City brand still having plenty of clout. It’s not alone, since several fallen consumer electronic brands have made a comeback lately.

Even Crazy Eddie is in the process of trying to make a comeback.

Here is how CircuitCity.com describes itself in the “About Us” section:

Circuit City is a proud brand that America has grown to count on over the years to provide many products which help people enjoy their lives. With a history dating back to 1949, the Circuit City brand lives on as a member of the Systemax group of companies effective May 19, 2009.

CircuitCity.com is all-new and ready to serve you with a wider selection of products than previously offered in Circuit City stores or online . You’ll find an expanded selection of consumer electronics, desktops, notebooks, netbooks, and all the accessories to go with them. We have a HUGE selection of HDTVs, DVD and Blu-Ray players, DVRs, Home Theater Systems, GPS Players, Digital Cameras, Hi-Def Camcorders, Digital Picture Frames and so much more! Plus, we have a greatly expanded selection of computer components, like computer cases, motherboards, memory and processors – all the things to upgrade your current system, or build your own.

On the new CircuitCity.com, you’ll also find extremely affordable deals you won’t find anywhere else. In addition to our incredibly low prices, CircuitCity.com offers world-class online content designed to provide you with the in-depth knowledge you need to make informed buying decisions. Our site features hundreds of professionally produced videos, close-up photographs of each item, product reviews by customers, and countless educational articles written by experts in the computer & electronics industry. CircuitCity.com also features product manuals, spec sheets, brochures and other informational materials to enrich your shopping experience. When you visit CircuitCity.com, you’ll find all the resources you need to shop smart and to shop with confidence.

You can expect fast shipping times from our centrally located warehouse – we expect that more than 90% of our orders will be shipped from our warehouse the same day you place your order (orders placed before 8PM EST). Our goal is your 100% satisfaction!

We have a dedicated call center you can reach at 1-800 THE CITY, 24 hours a day, 7 days a week. Our representatives are some of the best in the industry – here to help you select the right products, complete a purchase or answer any customer service questions you might have.